Model Number: ZT09045-A1 Brand Name: yangfar Key Specifications/Special Features: * Drives away mosquito only;* AC 220V/50HZ;* Effective cover range: 80-120 square meters;* Ultrasonic technology: 22--65 khz;* Power frequency output up to 130 db;* Rated Voltage:110V-230V; * Frequency: 50-60HZ; * Power consumption: 7w;* Double ways frequency choice for mosquito repelling;* Copy male mosquito and dragonfly ultrasonic frequency for mosquito repelling.